The effect Calotropis gigantea leaf extract on eggs hatchability and survival of Barbonymus gonionotus larvae

Abstract

This study aims to determine the Calotropis gigantea extract against hatchability of Barbonymus gonionotus eggs infected with pathogenic fungi. The research was conducted at Fish Seeds Center Krueng Batee, Aceh Barat Daya district, from July to August 2020. Statistical analysis used a completely randomized design (CRD) method with 6 treatment and 3 replications for each treatment. The treatments were carried out by immersing the Barbonymus gonionotus eggs into C. gigantea leaf extrcact. Namely Control (without extract), A (400 ppm extract), B (800 ppm extract), C (1200 ppm extract), D (1600 ppm extract), and E (2000 ppm extract). ANOVA test results showed that the addition of C. gigantea leaf extract had asignificant effect (P<0.05) on hatchability and survival of B. gonionotus larvae. The best treatment was achieved at the C treatment (800 ppm extract) with 88 % hatching rate and 92,54 % survival rate. From the results of this study, it is known that using C. gigantea leaf extract can increase the hatchability of B. gonionotus fish eggs infected with the Saprolegnia sp. pathogen, which means it can also increase the production of fish seeds.